BERMUDA BIOLOGICAL STATION. 401 



though there are several underground connections. This single surface- 

 connection is by means of a passage only about thirty feet wide, through 

 which the water rushes with great swiftness during every tide. It is 

 surprising for how short a time at the turn of the tide, five or ten 

 minutes only, the water is relatively quiet. This narrow passage leads 

 directly to the Flatts Inlet, which in turn connects with the great 

 north lagoon. The inlet, not being very broad, is therefore swept by 

 a rather strong current. This region (' The Flatts,' Map 1) is of 

 particular interest to us, for it is on this inlet that our laboratory is 

 located. 



A.11 the waters held, as it were, in the hand of the fancied gauntlet 

 — Great Sound, Little Sound (Map 4), Hamilton Harbor (Map 3), 



Fig. 3. Residence surrounded by Palmetto Trees. Photograph by Phelps Gage. 



etc. — form another extensive landlocked sea. which formerly, in all 

 probability, communicated less freely with the north lagoon than at 

 present, for a submarine ridge runs out from Spanish Point — the tip of 

 the thumb (Map 1) — to Ireland Island. At several points this ridge 

 is awash at low tide. 



Through the greater part of the main island there are three parallel 

 roads (Map 3) : one— known as the middle road — runs in a general 

 way along the ridge ; the others — known as north and south roads — run 

 along the north and south shores. The north and middle roads meet 

 at The Flatts, and nearly all the travel between the only two cities, 

 Hamilton and St. George's, passes over the bridge which crosses the 

 gorge between the inlet and Harrington Sound. 



The houses of Bermuda are, almost without exception, made of the 



